For 21 years, Mark Scian never enjoyed a deep night’s sleep. His restless nights began to infringe on his personality and performance at school. With help from UF Health, Mark is now enjoying his improved quality of life.

In this video, William Collins, MD, FACS, FAAP, Chief of the Division of Pediatric Otolaryngology at the University of Florida, explains the anatomy of the nose, the many reasons a child will have runny nose, and when to see your doctor.